Pipe-coupling.



V. H. KRIEGSI-IABER.

PIPE COUPLING.

APPLICATION FILED FEB. 12, 1908.

924,558. Patented June 8, 1909.

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1% in uses VICTOR H. KRIEGSHABER, OF ATLANTA, GEORGIA.

PIPE-cocaine.

Specification of Letters Patent.

Patented; June s, 1909.

Application filed February 12, 1908. Serial no. 415,645.

To all whom it may concern:

Be it known that I, Vroron H. KRIEG- sneBER, a citizen of the UnitedStates, residing at Atlanta, in the county of Fulton and State ofGeorgia, have invented certain new and useful Improvements in Pipe-Couplers; and I do hereby declare the following to be a full, clear, andexact descri tlon of the invention, such as will enab e others skilledin the art to which it appertainsto make and use the same.

This invention relates to pipe couplers, and particularly to improvedcouplers designed to form an elastic joint, and has for an object theprovision of an encircling composition arranged to firmly grip the endsof oining plpes.

' Another object in view is the provision of a connecting substance forencircling the ends of abutting pipes and gripping the same formed ofsubstantially imperishable matter. I

Another object in View is the provision of a bitumen or asphalt mixturecast around the ends of abutting pipes for forming a tight joint and onethat will be flexible for permitting the settling or changing slightlyof the position of the pipe without opening a joint therebetween. v

liVith these and other objects in view the invention comprises certainnovel constructions, combination and arrangement of parts as will behereinafter more fully described and claimed.

In the accompanying drawing: Figure 1 is a vertical section through theabutting ends of two pipes and a coupler formed according to the presentinvention. Fig. 2 is a plan view of Fig. 1 with certain parts brokenaway. Fig. 3 is a vertical longitudinal section through the abuttingends of two coup or shown in connection therewith.

In placing pipes in the groundas, for instance, conduit pipes, waterpipes, and" the like the same are usually placed in the ground and thenhave their ends secured together invarious ways for forming a tightjoint therebetween so that there will be no eakage. Various ways as, forinstance,

casting cement around the ends, have been -used in pipes of acomparatively large size for forming a tight joint between the pi cs forpreventing any leakage at that point. However, in case the groundshould, settle or there should be any movement of theipes and a slightlymodified form of.

ground from any cause the cement 'will break or crack and consequentlypermit leakage. To overcome any likelihood of breaking the joint I haveprovided a joining or coupler of yielding and somewhat flexible materlaldesigned tobe molded in place around the abutting ends of pipes so as toform a tight joint and yet permit movement of the pipes without breakingor causing an opening to be formed.

In carrying out my invention I cast the material forming the couplingmeans around the abutting ends of pipes, as clearly shown in thedrawlng.

Referring to the drawing, 1 indicates the.

coupler placed in position for preventing any.

leakage from pipes 2 and 3 and for preventing any foreign matter toenter into pipes 2 and 3 through the abutting ends of the pi es. Thecoupling means I is formed of a yiel 'ng and flexible material as, forinstance, bitumen or asphalt mixture improper proportion with stonedust. In preparing the mixture the stone dust and the asphalt are mixedin proper proportion for forming a mass of spongy consistency and thenwhen it is ready to form a coupler 1 a suitable mold of any desired kindis placed around the abutting ends of the pipes as 2 and 3 and themixture formed is heated until the same is melted to a liquidconsistency and is then poured into the mold around the abutting ends ofthe pipes. This will cause the mixture to come in contact with theunevenness in the ends of the pipe and thereby closely contact with orgrip the ends of the pipes and prevent any matter from fpassing inthrough the ends of the pipes or rom the ends of the pipes out. Afterthe material has been placed in the mold, the mold is left in positionuntil the material is cool. After the com ound or mixture has cooled ithardens unt it is of a somewhat spongy or springy conslstency so thateither pipe 2 or 3 may move slightly without injuring the coupler l, orboth the pipes may move by the settling of the earth or other cause andyet the joint be held tight by reason of the fact that the consistencyof the mixture of which member 1 is formed will permit such movement andyet adhere to the ends of the pi es. To positively ho d the coupler 1 1nposition and also to assist in forming a tight joint between the pipes 2and 3 and the coupler the ipes 2 and 3 are formed with lid cs or an arcorrugations t and'5 respective y.

coupler in position on the pipe, though ordiin addition the pipe 2 isbeveled off conicalshaped at 6 and is designed to fit into a seat 7formed in pipe 3. The end of pipe 3 also falls short of pipe 2, asclearly seen in Fig. 1, so as to form a groove 8 into which a depend ingangular lug or ring 9 projects. When the liquid material has been pouredinto the mold the same will enter into groove 8 and also into thecorrugations 4 and 5 and thereby tightly engage the pipes 2 and 3 andprevent any leakage at the joint. By the construction of the beveledportion 6 and seat7, together with the groove 8 which is set back ashort distance from the beveled portion and seat, a structure isprovided in which a joint between the pipes 2 and 3, is, more strictlyspeaking, some distance from the joint sealed by coupler 1. This willprevent any of the matter of which coupler 1 is formed from passingthrough a joint into the pipe.

In Fig. 3 will be seen a slightly modified form of coupler in whichgrooves 10 and 11 Z are formed in pipes 2 and 3 respectively into whichdepending ridges 12 and 13 project. Grooves 10 and 11 and consequentlydepend ing ridges 12 and 13 preferably extend entirely around the pipesbut if desired the same may fall short thereof and be only segmental informat-ion. This will form recessed portions in the pipes and lugs orhook portions in the coupler 1 for more firmly holding the narily thegrooves 10 and 11 are preferable. Pipes 2 and 3 may be made fromconcrete and properly reinforced as desired, or the same may be madefrom terra cotta or any other material and be formed with grooves 10 and11 or groove 8.

The material being stone and asphalt gives a compound that is almostindestruetible from the attacks of nature and will remain in place andform a tight coupler around the abutting ends of therefrom.

What I claim is: f

1. A pipe coupling joint comprising the adjacent ends of a pair ofpipes, and a coup ling member consisting of a ring or collar formed of amixture of asphalt and pulvcrthe pipes until removed ized stone moldedabout the adjacent ends of said pipes and llexibly connecting themtogether.

2. A pipe coupling joint comprising abutting ends of a pair of pipes,each end being provided with a circumferential groove and one end beingformed with a projecting beveled portion and the other with aconicalshaped recessed portion in which said beveled portion fits, and acoupling member consisting of a collar or ring formed of an elasticwater proof composition of matter surrounding the adjacent ends of saidpipes and filling the grooves therein and thereby holding them together.

3. A pipe coupling joint comprising abutting ends of a pair of pipeshaving one end projecting into the adjacent end with a circumferentialgroove between said ends and a coupling member consisting of an elasticwater proof plastic composition molded over and surrounding the adjacentends of said )1)8S and fOIllllIl" a flexible connection bc- D tweenthem.

4. A pipe coupling joint comprising abutting ends of a pair of pipeshaving the end of one pipe project into the end of the other pipe andformed with a groove at the juncture of the abutting ends, and acoupling member comprising elastic composition molded over andsurrounding the abutting ends of said pipes and forming a flexibleconnection.

5. A pipe coupling joint comprising the adjacent ends of a pair of pipeshaving the end of one pipe project into the end of the other, and acoupling member spanning the abutting ends of said pipes comprising aring of mixture of asphalt and pulverized stone molded around theadjacent ends of said pipes, said coupling member being formed with adepending annular flange projecting into the joint between the ends ofsaid pipes.

In testimony whereof I affix my signature in presence of two witnesses.

VICTOR II. KRIEGSHABER.

